Laminated holographic medium, recording apparatus/method, reproduction apparatus/method for the same and design method of laminated hologram medium
US8018636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2004 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jul 5, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/2615
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A medium 1, that is a laminated holographic medium of the present invention is composed of two or more core layers 2; 3 or more cladding layers 3 set so as to bind the core layers 2; one or more diffraction grating layers 4 storing information data and set at a boundary between a portion of the core layers 2 and the cladding layers 3 binding the core layers 2 or set inside the core layers 2; and one or more recording layers 42 storing information data as forms or a refractive index distribution and set at a boundary between a portion of the core layers 2 and the cladding layers 3 binding the core layers 2 or inside the core layers 2 through or without a gap layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.